fix: credit values /100; add after-reset/today badge to cards

windows/App.xaml

@@ -1,29 +1,32 @@
 <Application x:Class="ClaudeCheckerWindows.App"
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:po="http://schemas.microsoft.com/winfx/2006/xaml/presentation/options"
              ShutdownMode="OnExplicitShutdown">
     <Application.Resources>
-        <SolidColorBrush x:Key="BackgroundBrush"   Color="#F3F3F3"/>
-        <SolidColorBrush x:Key="CardBrush"         Color="#FFFFFF"/>
-        <SolidColorBrush x:Key="AccentBrush"       Color="#F97316"/>
-        <SolidColorBrush x:Key="TextBrush"         Color="#1C1C1C"/>
-        <SolidColorBrush x:Key="SecondaryBrush"    Color="#6E6E6E"/>
-        <SolidColorBrush x:Key="BorderBrush"       Color="#E0E0E0"/>
-        <SolidColorBrush x:Key="BlueBrush"         Color="#0078D4"/>
-        <SolidColorBrush x:Key="ButtonBrush"       Color="#FFFFFF"/>
-        <SolidColorBrush x:Key="SurfaceBrush"      Color="#FAFAFA"/>
-        <SolidColorBrush x:Key="BannerBgBrush"     Color="#E8F2FB"/>
-        <SolidColorBrush x:Key="BannerBorderBrush" Color="#B3D6F5"/>
+        <SolidColorBrush x:Key="BackgroundBrush"   Color="#F3F3F3" po:Freeze="False"/>
+        <SolidColorBrush x:Key="CardBrush"         Color="#FFFFFF" po:Freeze="False"/>
+        <SolidColorBrush x:Key="AccentBrush"       Color="#F97316" po:Freeze="False"/>
+        <SolidColorBrush x:Key="TextBrush"         Color="#1C1C1C" po:Freeze="False"/>
+        <SolidColorBrush x:Key="SecondaryBrush"    Color="#6E6E6E" po:Freeze="False"/>
+        <SolidColorBrush x:Key="BorderBrush"       Color="#E0E0E0" po:Freeze="False"/>
+        <SolidColorBrush x:Key="BlueBrush"         Color="#0078D4" po:Freeze="False"/>
+        <SolidColorBrush x:Key="ButtonBrush"       Color="#FFFFFF" po:Freeze="False"/>
+        <SolidColorBrush x:Key="SurfaceBrush"      Color="#FAFAFA" po:Freeze="False"/>
+        <SolidColorBrush x:Key="BannerBgBrush"     Color="#E8F2FB" po:Freeze="False"/>
+        <SolidColorBrush x:Key="BannerBorderBrush" Color="#B3D6F5" po:Freeze="False"/>
+        <SolidColorBrush x:Key="HoverBrush"       Color="#EBEBEB" po:Freeze="False"/>
+        <SolidColorBrush x:Key="BadgeBrush"        Color="#F0F0F0" po:Freeze="False"/>
 
         <Style x:Key="HeaderText" TargetType="TextBlock">
             <Setter Property="FontSize"   Value="10"/>
             <Setter Property="FontWeight" Value="SemiBold"/>
-            <Setter Property="Foreground" Value="{StaticResource SecondaryBrush}"/>
+            <Setter Property="Foreground" Value="{DynamicResource SecondaryBrush}"/>
             <Setter Property="FontFamily" Value="Segoe UI"/>
         </Style>
 
         <Style x:Key="PrimaryButton" TargetType="Button">
-            <Setter Property="Background"      Value="{StaticResource BlueBrush}"/>
+            <Setter Property="Background"      Value="{DynamicResource BlueBrush}"/>
             <Setter Property="Foreground"      Value="White"/>
             <Setter Property="BorderThickness" Value="0"/>
             <Setter Property="Padding"         Value="14,6"/>
@@ -52,10 +55,10 @@
         </Style>
 
         <Style x:Key="SmallButton" TargetType="Button">
-            <Setter Property="Background"      Value="{StaticResource ButtonBrush}"/>
-            <Setter Property="BorderBrush"     Value="{StaticResource BorderBrush}"/>
+            <Setter Property="Background"      Value="{DynamicResource ButtonBrush}"/>
+            <Setter Property="BorderBrush"     Value="{DynamicResource BorderBrush}"/>
             <Setter Property="BorderThickness" Value="1"/>
-            <Setter Property="Foreground"      Value="{StaticResource TextBrush}"/>
+            <Setter Property="Foreground"      Value="{DynamicResource TextBrush}"/>
             <Setter Property="Padding"         Value="10,4"/>
             <Setter Property="FontSize"        Value="12"/>
             <Setter Property="FontFamily"      Value="Segoe UI"/>
@@ -71,7 +74,7 @@
                         </Border>
                         <ControlTemplate.Triggers>
                             <Trigger Property="IsMouseOver" Value="True">
-                                <Setter Property="Background" Value="#F0F0F0"/>
+                                <Setter Property="Background" Value="{DynamicResource HoverBrush}"/>
                             </Trigger>
                         </ControlTemplate.Triggers>
                     </ControlTemplate>
@@ -80,8 +83,84 @@
         </Style>
 
         <Style TargetType="ComboBox">
-            <Setter Property="FontFamily" Value="Segoe UI"/>
-            <Setter Property="FontSize"   Value="12"/>
+            <Setter Property="FontFamily"      Value="Segoe UI"/>
+            <Setter Property="FontSize"        Value="12"/>
+            <Setter Property="Background"      Value="{DynamicResource CardBrush}"/>
+            <Setter Property="Foreground"      Value="{DynamicResource TextBrush}"/>
+            <Setter Property="BorderBrush"     Value="{DynamicResource BorderBrush}"/>
+            <Setter Property="BorderThickness" Value="1"/>
+            <Setter Property="Padding"         Value="8,4"/>
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="ComboBox">
+                        <Grid>
+                            <Border x:Name="Border"
+                                    Background="{TemplateBinding Background}"
+                                    BorderBrush="{TemplateBinding BorderBrush}"
+                                    BorderThickness="{TemplateBinding BorderThickness}"
+                                    CornerRadius="4">
+                                <Grid>
+                                    <ContentPresenter x:Name="ContentSite"
+                                        IsHitTestVisible="False"
+                                        Content="{TemplateBinding SelectionBoxItem}"
+                                        ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
+                                        Margin="{TemplateBinding Padding}"
+                                        VerticalAlignment="Center" HorizontalAlignment="Left"/>
+                                    <TextBlock Text="▾" FontSize="10"
+                                               Foreground="{DynamicResource SecondaryBrush}"
+                                               HorizontalAlignment="Right" VerticalAlignment="Center"
+                                               Margin="0,0,8,0" IsHitTestVisible="False"/>
+                                    <ToggleButton Focusable="False" ClickMode="Press"
+                                                  IsChecked="{Binding IsDropDownOpen, Mode=TwoWay,
+                                                      RelativeSource={RelativeSource TemplatedParent}}"
+                                                  Background="Transparent" BorderThickness="0"/>
+                                </Grid>
+                            </Border>
+                            <Popup x:Name="Popup" Placement="Bottom"
+                                   IsOpen="{TemplateBinding IsDropDownOpen}"
+                                   AllowsTransparency="True" Focusable="False"
+                                   PopupAnimation="Slide">
+                                <Border SnapsToDevicePixels="True"
+                                        MinWidth="{TemplateBinding ActualWidth}"
+                                        MaxHeight="{TemplateBinding MaxDropDownHeight}"
+                                        Background="{DynamicResource CardBrush}"
+                                        BorderBrush="{DynamicResource BorderBrush}"
+                                        BorderThickness="1" CornerRadius="4">
+                                    <ScrollViewer Margin="0,2">
+                                        <ItemsPresenter/>
+                                    </ScrollViewer>
+                                </Border>
+                            </Popup>
+                        </Grid>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+            <Setter Property="ItemContainerStyle">
+                <Setter.Value>
+                    <Style TargetType="ComboBoxItem">
+                        <Setter Property="Foreground" Value="{DynamicResource TextBrush}"/>
+                        <Setter Property="Background" Value="{DynamicResource CardBrush}"/>
+                        <Setter Property="Padding"    Value="10,5"/>
+                        <Setter Property="Template">
+                            <Setter.Value>
+                                <ControlTemplate TargetType="ComboBoxItem">
+                                    <Border x:Name="Bd"
+                                            Background="{TemplateBinding Background}"
+                                            Padding="{TemplateBinding Padding}">
+                                        <ContentPresenter/>
+                                    </Border>
+                                    <ControlTemplate.Triggers>
+                                        <Trigger Property="IsHighlighted" Value="True">
+                                            <Setter TargetName="Bd" Property="Background"
+                                                    Value="{DynamicResource HoverBrush}"/>
+                                        </Trigger>
+                                    </ControlTemplate.Triggers>
+                                </ControlTemplate>
+                            </Setter.Value>
+                        </Setter>
+                    </Style>
+                </Setter.Value>
+            </Setter>
         </Style>
 
         <Style TargetType="ScrollViewer">

windows/App.xaml.cs

@@ -8,8 +8,12 @@ namespace ClaudeCheckerWindows;
 
 public partial class App : Application
 {
-    public static UsageViewModel ViewModel { get; } = new();
-    public static UpdateManager  Updater   { get; } = new();
+    public static UsageViewModel    ViewModel       { get; } = new();
+    public static UpdateManager     Updater         { get; } = new();
+    // Persistent hidden WebView2 — shares the same user data folder as LoginWindow
+    // so its cookies (including cf_clearance) are always live. Used on every refresh
+    // for endpoints that need a real browser session (overage, prepaid).
+    public static WebViewFetchWindow BackgroundBrowser { get; } = new();
 
     private Forms.NotifyIcon? _tray;
     private PopupWindow?      _popup;
@@ -33,11 +37,18 @@ public partial class App : Application
         base.OnStartup(e);
         ThemeManager.Initialize();
         SetupTray();
+        ShowPopup();
         ScheduleTimer(ViewModel.RefreshInterval);
 
+        // Show background browser window on the UI thread before Task.Run
+        BackgroundBrowser.Show();
+
         _ = Task.Run(async () =>
         {
-            await Task.Delay(1000);
+            await ViewModel.LoadFromCacheAsync();
+            // Initialize the persistent background browser (navigates to claude.ai once)
+            await Application.Current.Dispatcher.InvokeAsync(
+                () => BackgroundBrowser.InitAsync()).Task.Unwrap();
             await ViewModel.RefreshAsync();
             await Updater.CheckForUpdatesAsync();
         });

windows/AppSettings.cs

@@ -6,8 +6,14 @@ namespace ClaudeCheckerWindows;
 
 public class AppSettings
 {
+    // Auth signal — non-empty means the user has completed sign-in at least once.
+    // The WebView2 user-data folder holds the live session; this is only for startup.
     public string CookieStore     { get; set; } = "";
+
+    // Accumulated sparkline data — built up over multiple refreshes.
     public string BurnHistory     { get; set; } = "";
+
+    // User preferences
     public int    RefreshInterval { get; set; } = 120;
     public bool   ShowInTaskbar   { get; set; } = true;
     public bool   BetaChannel     { get; set; } = false;

windows/ClaudeCheckerWindows.csproj

@@ -26,9 +26,7 @@
     <None Update="Assets\icon.ico">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
-    <None Update="Assets\icon.png">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
+    <Resource Include="Assets\icon.png"/>
   </ItemGroup>
 
 </Project>

windows/Controls/GaugeControl.cs

@@ -46,27 +46,16 @@ public class GaugeControl : FrameworkElement
             DrawArc(dc, cx, cy, radius, StartAngleDeg, SweepDeg * (Percent / 100.0),
                 new Pen(Accent, StrokeWidth));
 
-        var dpi = VisualTreeHelper.GetDpi(this).PixelsPerDip;
-
+        var dpi       = VisualTreeHelper.GetDpi(this).PixelsPerDip;
         var textColor = ThemeManager.IsDark ? Color.FromRgb(0xF5, 0xF5, 0xF5) : Color.FromRgb(0x1C, 0x1C, 0x1C);
-        var subColor  = Color.FromRgb(0x9E, 0x9E, 0x9E);
 
         var pctText = new FormattedText(
             $"{(int)Math.Round(Percent)}%",
             CultureInfo.CurrentCulture, FlowDirection.LeftToRight,
             new Typeface(new FontFamily("Segoe UI"), FontStyles.Normal, FontWeights.Bold, FontStretches.Normal),
-            14, new SolidColorBrush(textColor), dpi);
-        dc.DrawText(pctText, new Point(cx - pctText.Width / 2, cy - pctText.Height - 1));
+            18, new SolidColorBrush(textColor), dpi);
 
-        var sub = new FormattedText(
-            "Updated\nnow",
-            CultureInfo.CurrentCulture, FlowDirection.LeftToRight,
-            new Typeface("Segoe UI"), 7,
-            new SolidColorBrush(subColor), dpi)
-        {
-            TextAlignment = TextAlignment.Center
-        };
-        dc.DrawText(sub, new Point(cx - sub.Width / 2, cy + 2));
+        dc.DrawText(pctText, new Point(cx - pctText.Width / 2, cy - pctText.Height / 2));
     }
 
     private static void DrawArc(DrawingContext dc, double cx, double cy, double r,

windows/LoginWindow.xaml.cs

@@ -1,7 +1,5 @@
 using Microsoft.Web.WebView2.Core;
-using System;
 using System.Collections.Generic;
-using System.Linq;
 using System.Threading.Tasks;
 using System.Windows;
 
@@ -9,6 +7,8 @@ namespace ClaudeCheckerWindows;
 
 public partial class LoginWindow : Window
 {
+    private bool _closing;
+
     public LoginWindow()
     {
         InitializeComponent();
@@ -19,7 +19,7 @@ public partial class LoginWindow : Window
     {
         var env = await CoreWebView2Environment.CreateAsync(userDataFolder:
             System.IO.Path.Combine(
-                Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+                System.Environment.GetFolderPath(System.Environment.SpecialFolder.LocalApplicationData),
                 "ClaudeChecker", "WebView2"));
 
         await Browser.EnsureCoreWebView2Async(env);
@@ -27,14 +27,14 @@ public partial class LoginWindow : Window
 
         Browser.CoreWebView2.NavigationCompleted += async (_, e) =>
         {
-            if (!e.IsSuccess) return;
+            if (!e.IsSuccess || _closing) return;
             var uri = Browser.CoreWebView2.Source;
             if (!uri.Contains("claude.ai")) return;
 
             var cookies = await Browser.CoreWebView2.CookieManager.GetCookiesAsync("https://claude.ai");
-            var signedIn = cookies.Any(c =>
-                c.Name.Equals("sessionKey", StringComparison.OrdinalIgnoreCase) ||
-                c.Name.StartsWith("sk-ant", StringComparison.OrdinalIgnoreCase));
+            var signedIn = System.Linq.Enumerable.Any(cookies, c =>
+                c.Name.Equals("sessionKey", System.StringComparison.OrdinalIgnoreCase) ||
+                c.Name.StartsWith("sk-ant",  System.StringComparison.OrdinalIgnoreCase));
 
             await Dispatcher.InvokeAsync(() =>
             {
@@ -44,23 +44,27 @@ public partial class LoginWindow : Window
                     : "Complete sign-in, then click Done.";
             });
 
-            // Auto-close only on explicit post-login redirects, not on initial load
-            if (signedIn && (uri.Contains("/chats") || uri.Contains("/new")))
-            {
+            if (!uri.Contains("/login") && !uri.Contains("/signin") && signedIn)
                 await SaveAndClose(cookies);
-            }
         };
     }
 
     private async void Done_Click(object sender, RoutedEventArgs e)
     {
+        if (_closing) return;
         var cookies = await Browser.CoreWebView2.CookieManager.GetCookiesAsync("https://claude.ai");
         await SaveAndClose(cookies);
     }
 
     private async Task SaveAndClose(IReadOnlyList<CoreWebView2Cookie> cookies)
     {
+        if (_closing) return;
+        _closing = true;
+
+        // Persist cookies so the app knows the user is signed in on next startup.
+        // All live data is fetched by the background WebView2 on the next refresh.
         UsageViewModel.SaveCookies(cookies);
+
         await Dispatcher.InvokeAsync(() => DialogResult = true);
     }
 }

windows/Models.cs

@@ -21,8 +21,9 @@ public class AgentLimit
 
 public class UsageResponse
 {
-    [JsonPropertyName("claude_ai_default_5h")] public WindowData? FiveHour { get; set; }
-    [JsonPropertyName("claude_ai_default")]    public WindowData? SevenDay  { get; set; }
+    [JsonPropertyName("five_hour")]   public WindowData?  FiveHour   { get; set; }
+    [JsonPropertyName("seven_day")]   public WindowData?  SevenDay   { get; set; }
+    [JsonPropertyName("extra_usage")] public ExtraUsage?  ExtraUsage { get; set; }
 }
 
 public class WindowData
@@ -31,6 +32,14 @@ public class WindowData
     [JsonPropertyName("resets_at")]   public string? ResetsAt   { get; set; }
 }
 
+public class ExtraUsage
+{
+    [JsonPropertyName("is_enabled")]    public bool    IsEnabled    { get; set; }
+    [JsonPropertyName("currency")]      public string? Currency     { get; set; }
+    [JsonPropertyName("used_credits")]  public double? UsedCredits  { get; set; }
+    [JsonPropertyName("monthly_limit")] public double? MonthlyLimit { get; set; }
+}
+
 public class BootstrapResponse
 {
     [JsonPropertyName("account")] public AccountInfo? Account { get; set; }

windows/PopupWindow.xaml

@@ -5,7 +5,7 @@
         Title="ClaudeChecker"
         Width="480" Height="660"
         WindowStartupLocation="CenterScreen"
-        Background="{StaticResource BackgroundBrush}"
+        Background="{DynamicResource BackgroundBrush}"
         FontFamily="Segoe UI"
         ShowInTaskbar="True"
         ResizeMode="NoResize">
@@ -16,8 +16,8 @@
 
             <!-- Update banner -->
             <Border x:Name="UpdateBanner" DockPanel.Dock="Top" Visibility="Collapsed"
-                    Background="{StaticResource BannerBgBrush}"
-                    BorderBrush="{StaticResource BannerBorderBrush}" BorderThickness="0,0,0,1"
+                    Background="{DynamicResource BannerBgBrush}"
+                    BorderBrush="{DynamicResource BannerBorderBrush}" BorderThickness="0,0,0,1"
                     Cursor="Hand" MouseLeftButtonUp="UpdateBanner_Click">
                 <Grid Margin="16,10">
                     <Grid.ColumnDefinitions>
@@ -26,21 +26,21 @@
                         <ColumnDefinition Width="Auto"/>
                     </Grid.ColumnDefinitions>
                     <TextBlock Grid.Column="0" Text="⬇" FontSize="14"
-                               Foreground="{StaticResource BlueBrush}" VerticalAlignment="Center"/>
+                               Foreground="{DynamicResource BlueBrush}" VerticalAlignment="Center"/>
                     <StackPanel Grid.Column="1" Margin="10,0">
                         <TextBlock x:Name="UpdateBannerTitle" FontSize="12" FontWeight="SemiBold"
-                                   Foreground="{StaticResource TextBrush}"/>
+                                   Foreground="{DynamicResource TextBrush}"/>
                         <TextBlock Text="Click to view release notes and install."
-                                   FontSize="11" Foreground="{StaticResource SecondaryBrush}"/>
+                                   FontSize="11" Foreground="{DynamicResource SecondaryBrush}"/>
                     </StackPanel>
                     <Button Grid.Column="2" Content="Update" Style="{StaticResource SmallButton}"
-                            Foreground="{StaticResource BlueBrush}" Click="UpdateBanner_Click"/>
+                            Foreground="{DynamicResource BlueBrush}" Click="UpdateBanner_Click"/>
                 </Grid>
             </Border>
 
             <!-- Footer -->
-            <Border DockPanel.Dock="Bottom" BorderBrush="{StaticResource BorderBrush}"
-                    BorderThickness="0,1,0,0" Background="{StaticResource SurfaceBrush}">
+            <Border DockPanel.Dock="Bottom" BorderBrush="{DynamicResource BorderBrush}"
+                    BorderThickness="0,1,0,0" Background="{DynamicResource SurfaceBrush}">
                 <Grid Margin="12,8">
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="*"/>
@@ -55,7 +55,7 @@
                                      Width="12" Height="12" Visibility="Collapsed"
                                      Style="{x:Null}" Margin="0,0,6,0"/>
                         <TextBlock x:Name="LastUpdatedText" FontSize="11"
-                                   Foreground="{StaticResource SecondaryBrush}" VerticalAlignment="Center"/>
+                                   Foreground="{DynamicResource SecondaryBrush}" VerticalAlignment="Center"/>
                     </StackPanel>
                     <Button Grid.Column="1" Content="↻  Refresh"
                             Style="{StaticResource SmallButton}" Click="Refresh_Click"/>
@@ -72,17 +72,17 @@
 
         <!-- Settings panel -->
         <Border x:Name="SettingsPanel" Visibility="Collapsed"
-                Background="{StaticResource BackgroundBrush}">
+                Background="{DynamicResource BackgroundBrush}">
             <DockPanel>
-                <Border DockPanel.Dock="Top" BorderBrush="{StaticResource BorderBrush}"
-                        BorderThickness="0,0,0,1" Background="{StaticResource SurfaceBrush}" Padding="12,10">
+                <Border DockPanel.Dock="Top" BorderBrush="{DynamicResource BorderBrush}"
+                        BorderThickness="0,0,0,1" Background="{DynamicResource SurfaceBrush}" Padding="12,10">
                     <Grid>
                         <Button Content="← Back" HorizontalAlignment="Left"
                                 Style="{StaticResource SmallButton}" BorderThickness="0"
-                                Foreground="{StaticResource BlueBrush}" Background="Transparent"
+                                Foreground="{DynamicResource BlueBrush}" Background="Transparent"
                                 Click="BackFromSettings_Click"/>
                         <TextBlock Text="Settings" FontSize="14" FontWeight="SemiBold"
-                                   Foreground="{StaticResource TextBrush}"
+                                   Foreground="{DynamicResource TextBrush}"
                                    HorizontalAlignment="Center" VerticalAlignment="Center"/>
                     </Grid>
                 </Border>
@@ -91,13 +91,13 @@
                     <StackPanel Margin="20,16,20,20">
 
                         <TextBlock Text="AUTHENTICATION" Style="{StaticResource HeaderText}" Margin="0,0,0,8"/>
-                        <Border Background="{StaticResource CardBrush}" CornerRadius="6"
-                                BorderBrush="{StaticResource BorderBrush}" BorderThickness="1"
+                        <Border Background="{DynamicResource CardBrush}" CornerRadius="6"
+                                BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1"
                                 Padding="14,12" Margin="0,0,0,16">
                             <StackPanel>
                                 <StackPanel x:Name="AuthPanel" Margin="0,0,0,10"/>
                                 <TextBlock Text="Your session is stored locally and persists across restarts."
-                                           FontSize="11" Foreground="{StaticResource SecondaryBrush}"
+                                           FontSize="11" Foreground="{DynamicResource SecondaryBrush}"
                                            TextWrapping="Wrap" Margin="0,0,0,10"/>
                                 <StackPanel Orientation="Horizontal">
                                     <Button x:Name="SignInButton" Content="Sign In"
@@ -112,8 +112,8 @@
                         </Border>
 
                         <TextBlock Text="UPDATE CHANNEL" Style="{StaticResource HeaderText}" Margin="0,0,0,8"/>
-                        <Border Background="{StaticResource CardBrush}" CornerRadius="6"
-                                BorderBrush="{StaticResource BorderBrush}" BorderThickness="1"
+                        <Border Background="{DynamicResource CardBrush}" CornerRadius="6"
+                                BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1"
                                 Padding="14,12" Margin="0,0,0,16">
                             <Grid>
                                 <Grid.ColumnDefinitions>
@@ -122,9 +122,9 @@
                                 </Grid.ColumnDefinitions>
                                 <StackPanel>
                                     <TextBlock Text="Beta updates" FontSize="12" FontWeight="SemiBold"
-                                               Foreground="{StaticResource TextBrush}"/>
+                                               Foreground="{DynamicResource TextBrush}"/>
                                     <TextBlock Text="Receive early access builds — may be less stable"
-                                               FontSize="11" Foreground="{StaticResource SecondaryBrush}"/>
+                                               FontSize="11" Foreground="{DynamicResource SecondaryBrush}"/>
                                 </StackPanel>
                                 <CheckBox Grid.Column="1" x:Name="BetaToggle" VerticalAlignment="Center"
                                           Checked="BetaToggle_Changed" Unchecked="BetaToggle_Changed"/>
@@ -132,8 +132,8 @@
                         </Border>
 
                         <TextBlock Text="AUTO-REFRESH" Style="{StaticResource HeaderText}" Margin="0,0,0,8"/>
-                        <Border Background="{StaticResource CardBrush}" CornerRadius="6"
-                                BorderBrush="{StaticResource BorderBrush}" BorderThickness="1"
+                        <Border Background="{DynamicResource CardBrush}" CornerRadius="6"
+                                BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1"
                                 Padding="14,12" Margin="0,0,0,16">
                             <Grid>
                                 <Grid.ColumnDefinitions>
@@ -141,15 +141,15 @@
                                     <ColumnDefinition Width="Auto"/>
                                 </Grid.ColumnDefinitions>
                                 <TextBlock Text="Refresh interval" FontSize="12" FontWeight="SemiBold"
-                                           Foreground="{StaticResource TextBrush}" VerticalAlignment="Center"/>
+                                           Foreground="{DynamicResource TextBrush}" VerticalAlignment="Center"/>
                                 <ComboBox Grid.Column="1" x:Name="RefreshPicker" Width="100"
                                           SelectionChanged="RefreshPicker_Changed"/>
                             </Grid>
                         </Border>
 
                         <TextBlock Text="ABOUT" Style="{StaticResource HeaderText}" Margin="0,0,0,8"/>
-                        <Border Background="{StaticResource CardBrush}" CornerRadius="6"
-                                BorderBrush="{StaticResource BorderBrush}" BorderThickness="1"
+                        <Border Background="{DynamicResource CardBrush}" CornerRadius="6"
+                                BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1"
                                 Padding="14,12">
                             <Grid>
                                 <Grid.ColumnDefinitions>
@@ -162,20 +162,26 @@
                                 <StackPanel Grid.Column="1" VerticalAlignment="Center">
                                     <StackPanel Orientation="Horizontal">
                                         <TextBlock Text="ClaudeChecker" FontSize="12" FontWeight="SemiBold"
-                                                   Foreground="{StaticResource TextBrush}"/>
-                                        <Border Background="#F0F0F0" CornerRadius="3"
+                                                   Foreground="{DynamicResource TextBrush}"/>
+                                        <Border Background="{DynamicResource BadgeBrush}" CornerRadius="3"
                                                 Margin="6,0,0,0" Padding="5,1">
                                             <TextBlock x:Name="VersionLabel" FontSize="11"
-                                                       Foreground="{StaticResource SecondaryBrush}"
+                                                       Foreground="{DynamicResource SecondaryBrush}"
                                                        FontFamily="Consolas"/>
                                         </Border>
                                     </StackPanel>
                                     <TextBlock Text="Built by superdooper86 &amp; claude"
-                                               FontSize="11" Foreground="{StaticResource SecondaryBrush}"/>
+                                               FontSize="11" Foreground="{DynamicResource SecondaryBrush}"/>
+                                </StackPanel>
+                                <StackPanel Grid.Column="2" VerticalAlignment="Center" HorizontalAlignment="Right">
+                                    <Button x:Name="CheckUpdateButton"
+                                            Style="{StaticResource SmallButton}"
+                                            Click="CheckUpdate_Click"/>
+                                    <TextBlock x:Name="UpdateAvailableText" FontSize="10"
+                                               Foreground="{DynamicResource BlueBrush}"
+                                               HorizontalAlignment="Center"
+                                               Visibility="Collapsed" Margin="0,4,0,0"/>
                                 </StackPanel>
-                                <Button Grid.Column="2" x:Name="CheckUpdateButton"
-                                        Style="{StaticResource SmallButton}"
-                                        Click="CheckUpdate_Click" VerticalAlignment="Center"/>
                             </Grid>
                         </Border>
 
@@ -186,17 +192,17 @@
 
         <!-- Update panel -->
         <Border x:Name="UpdatePanel" Visibility="Collapsed"
-                Background="{StaticResource BackgroundBrush}">
+                Background="{DynamicResource BackgroundBrush}">
             <DockPanel>
-                <Border DockPanel.Dock="Top" BorderBrush="{StaticResource BorderBrush}"
-                        BorderThickness="0,0,0,1" Background="{StaticResource SurfaceBrush}" Padding="12,10">
+                <Border DockPanel.Dock="Top" BorderBrush="{DynamicResource BorderBrush}"
+                        BorderThickness="0,0,0,1" Background="{DynamicResource SurfaceBrush}" Padding="12,10">
                     <Grid>
                         <Button Content="← Back" HorizontalAlignment="Left"
                                 Style="{StaticResource SmallButton}" BorderThickness="0"
-                                Foreground="{StaticResource BlueBrush}" Background="Transparent"
+                                Foreground="{DynamicResource BlueBrush}" Background="Transparent"
                                 Click="CloseUpdate_Click"/>
                         <TextBlock Text="Update Available" FontSize="14" FontWeight="SemiBold"
-                                   Foreground="{StaticResource TextBrush}"
+                                   Foreground="{DynamicResource TextBrush}"
                                    HorizontalAlignment="Center" VerticalAlignment="Center"/>
                         <Button x:Name="NotNowButton" Content="Not Now" HorizontalAlignment="Right"
                                 Style="{StaticResource SmallButton}" Click="CloseUpdate_Click"/>
@@ -204,8 +210,8 @@
                 </Border>
 
                 <StackPanel Margin="20,16">
-                    <Border Background="{StaticResource CardBrush}" CornerRadius="6"
-                            BorderBrush="{StaticResource BorderBrush}" BorderThickness="1"
+                    <Border Background="{DynamicResource CardBrush}" CornerRadius="6"
+                            BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1"
                             Padding="14,12" Margin="0,0,0,12">
                         <Grid>
                             <Grid.ColumnDefinitions>
@@ -217,26 +223,26 @@
                             <StackPanel Grid.Column="1" VerticalAlignment="Center">
                                 <StackPanel Orientation="Horizontal" Margin="0,0,0,4">
                                     <TextBlock x:Name="CurrentVerLabel" FontSize="12" FontFamily="Consolas"
-                                               Foreground="{StaticResource SecondaryBrush}" VerticalAlignment="Center"/>
-                                    <TextBlock Text=" → " FontSize="11" Foreground="{StaticResource SecondaryBrush}"
+                                               Foreground="{DynamicResource SecondaryBrush}" VerticalAlignment="Center"/>
+                                    <TextBlock Text=" → " FontSize="11" Foreground="{DynamicResource SecondaryBrush}"
                                                VerticalAlignment="Center"/>
                                     <TextBlock x:Name="NewVerLabel" FontSize="13" FontWeight="SemiBold"
-                                               FontFamily="Consolas" Foreground="{StaticResource BlueBrush}"
+                                               FontFamily="Consolas" Foreground="{DynamicResource BlueBrush}"
                                                VerticalAlignment="Center"/>
                                 </StackPanel>
                                 <TextBlock x:Name="ReleaseNotesText" FontSize="11" TextWrapping="Wrap"
-                                           Foreground="{StaticResource SecondaryBrush}" MaxHeight="160"/>
+                                           Foreground="{DynamicResource SecondaryBrush}" MaxHeight="160"/>
                             </StackPanel>
                         </Grid>
                     </Border>
 
-                    <TextBlock x:Name="UpdateStatusText" Foreground="{StaticResource SecondaryBrush}"
+                    <TextBlock x:Name="UpdateStatusText" Foreground="{DynamicResource SecondaryBrush}"
                                FontSize="11" TextWrapping="Wrap" TextAlignment="Center"
                                Visibility="Collapsed" Margin="0,0,0,8"/>
                     <ProgressBar x:Name="UpdateProgress" Visibility="Collapsed"
-                                 Height="4" Margin="0,0,0,12" Foreground="{StaticResource BlueBrush}"/>
+                                 Height="4" Margin="0,0,0,12" Foreground="{DynamicResource BlueBrush}"/>
                     <TextBlock Text="ClaudeChecker will download, replace itself, and relaunch automatically."
-                               FontSize="11" Foreground="{StaticResource SecondaryBrush}"
+                               FontSize="11" Foreground="{DynamicResource SecondaryBrush}"
                                TextWrapping="Wrap" TextAlignment="Center" Margin="0,0,0,12"/>
                     <Button x:Name="InstallButton" Content="⬇  Download &amp; Install"
                             Style="{StaticResource PrimaryButton}" HorizontalAlignment="Stretch"

windows/PopupWindow.xaml.cs

@@ -14,7 +14,7 @@ public partial class PopupWindow : Window
     private static readonly UsageViewModel VM      = App.ViewModel;
     private static readonly UpdateManager  Updater = App.Updater;
     private readonly DispatcherTimer _clockTimer;
-    private bool _dialogOpen;
+
 
     [DllImport("dwmapi.dll")]
     private static extern int DwmSetWindowAttribute(IntPtr hwnd, int attr, ref int value, int size);
@@ -55,6 +55,13 @@ public partial class PopupWindow : Window
         CardsPanel.Children.Clear();
         foreach (var limit in VM.Limits)
             CardsPanel.Children.Add(BuildCard(limit));
+
+        if (VM.ExtraUsage?.IsEnabled == true)
+            CardsPanel.Children.Add(BuildExtraUsageSection());
+
+        var fiveHour = VM.Limits.FirstOrDefault(l => l.Window == WindowKind.FiveHour);
+        if (fiveHour != null && fiveHour.BurnHistory.Count > 0)
+            CardsPanel.Children.Add(BuildDiarySection(fiveHour));
     }
 
     private static UIElement BuildCard(AgentLimit limit)
@@ -117,24 +124,51 @@ public partial class PopupWindow : Window
             BorderThickness = new Thickness(0),
         };
 
-        var timeStack = new StackPanel { Orientation = Orientation.Horizontal, VerticalAlignment = VerticalAlignment.Center };
-        timeStack.Children.Add(new TextBlock { Text = "⏱ ", FontSize = 10, Foreground = secondary, VerticalAlignment = VerticalAlignment.Center });
-        timeStack.Children.Add(new TextBlock { Text = limit.TimeRemaining, FontSize = 12,
+        // Left side of time row: "⏱ Xh Ym   Resets D MMM YYYY at HH:mm"
+        var timeLeft = new StackPanel { Orientation = Orientation.Horizontal, VerticalAlignment = VerticalAlignment.Center };
+        timeLeft.Children.Add(new TextBlock { Text = "⏱ ", FontSize = 10, Foreground = secondary, VerticalAlignment = VerticalAlignment.Center });
+        timeLeft.Children.Add(new TextBlock { Text = limit.TimeRemaining, FontSize = 12,
             FontWeight = FontWeights.Medium, Foreground = text, VerticalAlignment = VerticalAlignment.Center });
-
-        var resetText = new TextBlock
+        timeLeft.Children.Add(new TextBlock
         {
-            Text = $"Resets {limit.ResetDate:d MMM yyyy} at {limit.ResetDate:HH:mm}",
-            FontSize = 11, Foreground = secondary, VerticalAlignment = VerticalAlignment.Center
-        };
+            Text = $"   Resets {limit.ResetDate:d MMM yyyy} at {limit.ResetDate:HH:mm}",
+            FontSize = 10, Foreground = secondary, VerticalAlignment = VerticalAlignment.Center
+        });
+
+        // Right side: "after reset" when 0%, "today HH:MM" when refreshed today
+        string? refreshLabel = limit.UsedPercent == 0
+            ? "after reset"
+            : VM.LastUpdated?.Date == DateTime.Today
+                ? "today " + VM.LastUpdated.Value.ToString("h:mm tt")
+                : null;
+
+        UIElement timeRight;
+        if (refreshLabel != null)
+        {
+            var inner = new StackPanel { Orientation = Orientation.Horizontal };
+            inner.Children.Add(new TextBlock { Text = "↗ ", FontSize = 10, Foreground = secondary, VerticalAlignment = VerticalAlignment.Center });
+            inner.Children.Add(new TextBlock { Text = refreshLabel, FontSize = 10, FontWeight = FontWeights.Medium,
+                Foreground = secondary, VerticalAlignment = VerticalAlignment.Center });
+            timeRight = new Border
+            {
+                Background   = new SolidColorBrush(Color.FromArgb(18, 0, 0, 0)),
+                CornerRadius = new CornerRadius(4),
+                Padding      = new Thickness(6, 2, 6, 2),
+                Child        = inner
+            };
+        }
+        else
+        {
+            timeRight = new TextBlock(); // empty placeholder
+        }
 
         var timeRow = new Grid();
         timeRow.ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) });
         timeRow.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto });
-        Grid.SetColumn(timeStack, 0);
-        Grid.SetColumn(resetText, 1);
-        timeRow.Children.Add(timeStack);
-        timeRow.Children.Add(resetText);
+        Grid.SetColumn(timeLeft,  0);
+        Grid.SetColumn(timeRight, 1);
+        timeRow.Children.Add(timeLeft);
+        timeRow.Children.Add(timeRight);
 
         var sparkline = new SparklineControl
         {
@@ -180,12 +214,137 @@ public partial class PopupWindow : Window
         return section;
     }
 
+    private static UIElement BuildDiarySection(AgentLimit limit)
+    {
+        var text      = (SolidColorBrush)Application.Current.Resources["TextBrush"];
+        var secondary = (SolidColorBrush)Application.Current.Resources["SecondaryBrush"];
+        var border    = (SolidColorBrush)Application.Current.Resources["BorderBrush"];
+
+        var samples = limit.BurnHistory.Count;
+        var avgBurn = limit.BurnRate;
+
+        var subtitle = new TextBlock
+        {
+            Text       = $"{samples} samples · {avgBurn:F1}%/h avg burn rate",
+            FontSize   = 11,
+            Foreground = secondary,
+            Margin     = new Thickness(16, 0, 16, 6),
+        };
+
+        var sparkline = new SparklineControl
+        {
+            Height    = 32,
+            Margin    = new Thickness(8, 8, 8, 8),
+            LineColor = Color.FromRgb(0xF9, 0x73, 0x16),
+            Data      = limit.BurnHistory,
+        };
+
+        var card = new Border
+        {
+            Background      = (SolidColorBrush)Application.Current.Resources["CardBrush"],
+            CornerRadius    = new CornerRadius(6),
+            BorderBrush     = border,
+            BorderThickness = new Thickness(1),
+            Margin          = new Thickness(12, 0, 12, 0),
+            Child           = sparkline,
+        };
+
+        var sectionLabel = new TextBlock
+        {
+            Text   = "SESSION DIARY",
+            Style  = (Style)Application.Current.Resources["HeaderText"],
+            Margin = new Thickness(16, 12, 16, 6),
+        };
+
+        var section = new StackPanel();
+        section.Children.Add(sectionLabel);
+        section.Children.Add(subtitle);
+        section.Children.Add(card);
+        return section;
+    }
+
+    private UIElement BuildExtraUsageSection()
+    {
+        var text      = (SolidColorBrush)Application.Current.Resources["TextBrush"];
+        var secondary = (SolidColorBrush)Application.Current.Resources["SecondaryBrush"];
+        var border    = (SolidColorBrush)Application.Current.Resources["BorderBrush"];
+        var accent    = new SolidColorBrush(Color.FromRgb(0xF9, 0x73, 0x16));
+
+        var overage  = VM.Overage;
+        var prepaid  = VM.Prepaid;
+        var currency = VM.ExtraUsage?.Currency ?? overage?.Currency ?? "$";
+
+        // All credit values from the API are in cents — divide by 100.
+        var spent   = (overage?.UsedCredits        / 100.0) ?? (VM.ExtraUsage?.UsedCredits  / 100.0) ?? 0;
+        var limit   = (overage?.MonthlyCreditLimit / 100.0) ?? (VM.ExtraUsage?.MonthlyLimit / 100.0) ?? 0;
+        var balance = (prepaid?.Amount             / 100.0) ?? 0;
+
+        bool unlimited = overage?.MonthlyCreditLimit == null && VM.ExtraUsage?.MonthlyLimit == null;
+
+        UIElement MakeRow(string label, string value, bool highlight = false)
+        {
+            var row = new Grid { Margin = new Thickness(0, 3, 0, 3) };
+            row.ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) });
+            row.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto });
+            var lbl = new TextBlock { Text = label, FontSize = 12, Foreground = secondary };
+            var val = new TextBlock { Text = value, FontSize = 12, FontWeight = FontWeights.Medium,
+                                      Foreground = highlight ? new SolidColorBrush(Color.FromRgb(0x4C, 0xAF, 0x50)) : text };
+            Grid.SetColumn(lbl, 0);
+            Grid.SetColumn(val, 1);
+            row.Children.Add(lbl);
+            row.Children.Add(val);
+            return row;
+        }
+
+        var contentPanel = new StackPanel { Margin = new Thickness(12, 10, 12, 10) };
+        contentPanel.Children.Add(MakeRow("Spent",   $"{currency} {spent:F2}", spent > 0));
+        if (unlimited)      contentPanel.Children.Add(MakeRow("Limit",   "Unlimited"));
+        else if (limit > 0) contentPanel.Children.Add(MakeRow("Limit",   $"{currency} {limit:F2}"));
+        if (balance > 0)    contentPanel.Children.Add(MakeRow("Balance", $"{currency} {balance:F2}"));
+
+        if (limit > 0)
+        {
+            var pct = Math.Min(spent / limit * 100, 100);
+            contentPanel.Children.Add(new ProgressBar
+            {
+                Value           = pct, Maximum = 100, Height = 4,
+                Margin          = new Thickness(0, 6, 0, 0),
+                Foreground      = accent,
+                Background      = new SolidColorBrush(Color.FromArgb(20, 0, 0, 0)),
+                BorderThickness = new Thickness(0),
+            });
+        }
+
+        var card = new Border
+        {
+            Background      = (SolidColorBrush)Application.Current.Resources["CardBrush"],
+            CornerRadius    = new CornerRadius(6),
+            BorderBrush     = border,
+            BorderThickness = new Thickness(1),
+            Margin          = new Thickness(12, 0, 12, 0),
+            Child           = contentPanel,
+        };
+
+        var sectionLabel = new TextBlock
+        {
+            Text   = "EXTRA USAGE CREDITS",
+            Style  = (Style)Application.Current.Resources["HeaderText"],
+            Margin = new Thickness(16, 12, 16, 6),
+        };
+
+        var section = new StackPanel();
+        section.Children.Add(sectionLabel);
+        section.Children.Add(card);
+        return section;
+    }
+
     // ── State updates ────────────────────────────────────────────────
 
     private void OnVmChanged(string? prop)
     {
         if (prop is nameof(UsageViewModel.Limits) or nameof(UsageViewModel.IsLoading)
-                 or nameof(UsageViewModel.LastUpdated) or nameof(UsageViewModel.ErrorMessage))
+                 or nameof(UsageViewModel.LastUpdated) or nameof(UsageViewModel.ErrorMessage)
+                 or nameof(UsageViewModel.ExtraUsage) or nameof(UsageViewModel.Overage) or nameof(UsageViewModel.Prepaid))
         {
             RebuildCards();
             UpdateFooter();
@@ -199,7 +358,10 @@ public partial class PopupWindow : Window
     private void OnUpdaterChanged(string? prop)
     {
         if (prop is nameof(UpdateManager.UpdateAvailable) or nameof(UpdateManager.LatestVersion))
+        {
             UpdateBannerState();
+            UpdateAboutSection();
+        }
         if (prop is nameof(UpdateManager.DownloadProgress))
             UpdateProgress.Value = Updater.DownloadProgress * 100;
         if (prop is nameof(UpdateManager.StatusMessage))
@@ -208,6 +370,21 @@ public partial class PopupWindow : Window
             InstallButton.Visibility = Visibility.Collapsed;
     }
 
+    private void UpdateAboutSection()
+    {
+        if (Updater.UpdateAvailable)
+        {
+            UpdateAvailableText.Text       = $"v{Updater.LatestVersion} available";
+            UpdateAvailableText.Visibility = Visibility.Visible;
+            CheckUpdateButton.Content      = "Install";
+        }
+        else
+        {
+            UpdateAvailableText.Visibility = Visibility.Collapsed;
+            CheckUpdateButton.Content      = "Check";
+        }
+    }
+
     private void UpdateBannerState()
     {
         var visible = Updater.UpdateAvailable;
@@ -236,7 +413,7 @@ public partial class PopupWindow : Window
     {
         VersionLabel.Text    = $"v{Updater.CurrentVersion}";
         BetaToggle.IsChecked = Updater.BetaChannel;
-        CheckUpdateButton.Content = Updater.UpdateAvailable ? "Install" : "Check";
+        UpdateAboutSection();
 
         var intervals = new[] { ("1 min", 60), ("2 min", 120), ("3 min", 180),
                                 ("4 min", 240), ("5 min", 300), ("10 min", 600) };
@@ -255,7 +432,7 @@ public partial class PopupWindow : Window
         var label = new TextBlock
         {
             Text = VM.IsSignedIn ? $"Signed in — {VM.UserEmail}" : "Not signed in",
-            FontSize = 13, FontWeight = FontWeights.SemiBold, Foreground = Brushes.White,
+            FontSize = 13, FontWeight = FontWeights.SemiBold, Foreground = (SolidColorBrush)Application.Current.Resources["TextBrush"],
             VerticalAlignment = VerticalAlignment.Center,
         };
         var authRow = new StackPanel { Orientation = Orientation.Horizontal };
@@ -312,14 +489,20 @@ public partial class PopupWindow : Window
 
     private async void SignIn_Click(object s, RoutedEventArgs e)
     {
-        _dialogOpen = true;
         var login = new LoginWindow { Owner = this };
         if (login.ShowDialog() == true)
         {
-            await VM.RefreshAsync();
+            await VM.LoadFromCacheAsync();
             InitSettings();
+            ShowMain();
+
+            _ = Task.Run(async () =>
+            {
+                await Task.Delay(3000);
+                await VM.RefreshAsync();
+                await Application.Current.Dispatcher.InvokeAsync(InitSettings);
+            });
         }
-        _dialogOpen = false;
         Show();
         Activate();
     }

windows/RELEASE_NOTES.md

@@ -1,3 +1,8 @@
-## What's new
+## What's new in beta.36
 
-Initial Windows release.
+### Bug fixes
+- Settings no longer incorrectly shows "Not signed in" when limits are working
+- Session Diary now shows correctly after the first successful refresh
+- Extra Usage Credits section now restored from cache on startup
+- Plan name, overage, and prepaid credits are now cached and shown immediately on launch
+- App now loads cached state instantly on startup before the background refresh completes

windows/ThemeManager.cs

@@ -54,6 +54,8 @@ public static class ThemeManager
             Set(res, "SurfaceBrush",      Color.FromRgb(0x25, 0x25, 0x27));
             Set(res, "BannerBgBrush",     Color.FromRgb(0x1A, 0x31, 0x52));
             Set(res, "BannerBorderBrush", Color.FromRgb(0x2A, 0x4A, 0x72));
+            Set(res, "HoverBrush",        Color.FromRgb(0x4A, 0x4A, 0x4C));
+            Set(res, "BadgeBrush",        Color.FromRgb(0x3A, 0x3A, 0x3C));
         }
         else
         {
@@ -67,11 +69,13 @@ public static class ThemeManager
             Set(res, "SurfaceBrush",      Color.FromRgb(0xFA, 0xFA, 0xFA));
             Set(res, "BannerBgBrush",     Color.FromRgb(0xE8, 0xF2, 0xFB));
             Set(res, "BannerBorderBrush", Color.FromRgb(0xB3, 0xD6, 0xF5));
+            Set(res, "HoverBrush",        Color.FromRgb(0xEB, 0xEB, 0xEB));
+            Set(res, "BadgeBrush",        Color.FromRgb(0xF0, 0xF0, 0xF0));
         }
     }
 
     private static void Set(ResourceDictionary res, string key, Color color)
     {
-        if (res[key] is SolidColorBrush b) b.Color = color;
+        res[key] = new SolidColorBrush(color);
     }
 }

windows/UsageViewModel.cs

@@ -13,7 +13,6 @@ namespace ClaudeCheckerWindows;
 
 public class UsageViewModel : INotifyPropertyChanged
 {
-    private static readonly string OrgId = "daf626a9-4924-4ff3-ba98-23b523062f8e";
     private static readonly JsonSerializerOptions JsonOpts = new() { PropertyNameCaseInsensitive = true };
 
     private List<AgentLimit> _limits = [];
@@ -21,10 +20,11 @@ public class UsageViewModel : INotifyPropertyChanged
     private string? _errorMessage;
     private bool _isSignedIn;
     private string _userEmail = "";
-    private string _planLabel = "Pro";
+    private string _planLabel = "Claude";
     private DateTime? _lastUpdated;
     private OverageSpendLimit? _overage;
     private PrepaidCredits? _prepaid;
+    private ExtraUsage? _extraUsage;
 
     private readonly Dictionary<string, List<double>> _burnHistory = [];
     private const int MaxHistorySamples = 24;
@@ -38,6 +38,7 @@ public class UsageViewModel : INotifyPropertyChanged
     public DateTime? LastUpdated            { get => _lastUpdated;  set => Set(ref _lastUpdated, value); }
     public OverageSpendLimit? Overage       { get => _overage;      set => Set(ref _overage, value); }
     public PrepaidCredits? Prepaid          { get => _prepaid;      set => Set(ref _prepaid, value); }
+    public ExtraUsage? ExtraUsage           { get => _extraUsage;   set => Set(ref _extraUsage, value); }
 
     private int _refreshInterval = 120;
     public int RefreshInterval
@@ -78,29 +79,56 @@ public class UsageViewModel : INotifyPropertyChanged
 
         try
         {
-            var cookies = await GetCookiesAsync();
-            if (cookies.Count == 0)
+            // CookieStore being non-empty is our signal that the user has signed in.
+            if (string.IsNullOrEmpty(AppSettings.Default.CookieStore))
             {
                 await Application.Current.Dispatcher.InvokeAsync(() =>
                 {
-                    IsSignedIn = false;
+                    IsSignedIn   = false;
                     ErrorMessage = "Not signed in — click Sign In to authenticate.";
-                    IsLoading = false;
+                    IsLoading    = false;
                 });
                 return;
             }
 
-            using var http = BuildClient(cookies);
+            List<AgentLimit> limits    = [];
+            OverageSpendLimit? overage = null;
+            PrepaidCredits?    prepaid = null;
+            ExtraUsage?     extraUsage = null;
+            string? email = null, orgId = null, planLabel = null;
+            string? refreshError = null;
 
-            var usageTask   = FetchAsync<UsageResponse>(http, $"https://claude.ai/api/organizations/{OrgId}/usage");
-            var overageTask = FetchAsync<OverageSpendLimit>(http, $"https://claude.ai/api/organizations/{OrgId}/overage_spend_limit");
-            var prepaidTask = FetchAsync<PrepaidCredits>(http, $"https://claude.ai/api/organizations/{OrgId}/prepaid/credits");
-            var emailTask   = FetchEmailAsync(http);
-
-            await Task.WhenAll(usageTask, overageTask, prepaidTask, emailTask);
-
-            var usage  = usageTask.Result;
-            var limits = BuildLimits(usage);
+            // Primary: persistent background WebView2 — always-live cookies, same as macOS.
+            // Fallback: HttpClient with saved cookies, only if the browser isn't ready yet
+            // (the brief window while InitAsync is still navigating at startup).
+            if (App.BackgroundBrowser.IsReady)
+            {
+                try
+                {
+                    (limits, overage, prepaid, extraUsage, email, orgId, planLabel) =
+                        await TryBrowserRefreshAsync();
+                }
+                catch (Exception ex)
+                {
+                    refreshError = ex.Message;
+                }
+            }
+            else
+            {
+                var cookies = await GetCookiesAsync();
+                if (cookies.Count > 0)
+                {
+                    try
+                    {
+                        (limits, overage, prepaid, extraUsage, email, orgId, planLabel, _) =
+                            await TryHttpRefreshAsync(cookies);
+                    }
+                    catch (Exception ex)
+                    {
+                        refreshError = ex.Message;
+                    }
+                }
+            }
 
             foreach (var limit in limits)
             {
@@ -115,14 +143,19 @@ public class UsageViewModel : INotifyPropertyChanged
 
             await Application.Current.Dispatcher.InvokeAsync(() =>
             {
-                Limits        = limits;
-                Overage       = overageTask.Result;
-                Prepaid       = prepaidTask.Result;
-                UserEmail     = emailTask.Result ?? UserEmail;
-                IsSignedIn    = true;
-                ErrorMessage  = null;
-                LastUpdated   = DateTime.Now;
-                IsLoading     = false;
+                if (limits.Count > 0)
+                {
+                    Limits    = limits;
+                    Overage   = overage;
+                    Prepaid   = prepaid;
+                    if (extraUsage != null) ExtraUsage = extraUsage;
+                }
+                if (!string.IsNullOrEmpty(planLabel)) PlanLabel = planLabel;
+                if (!string.IsNullOrEmpty(email))     UserEmail = email;
+                IsSignedIn   = true;
+                ErrorMessage = refreshError;
+                LastUpdated  = DateTime.Now;
+                IsLoading    = false;
             });
         }
         catch (Exception ex)
@@ -135,6 +168,128 @@ public class UsageViewModel : INotifyPropertyChanged
         }
     }
 
+    // ── Browser-based refresh (primary) ───────────────────────────────────────
+    // Runs JS on the persistent claude.ai page. Same live cookies as macOS WKWebView.
+
+    private async Task<(List<AgentLimit>, OverageSpendLimit?, PrepaidCredits?, ExtraUsage?, string?, string?, string?)>
+        TryBrowserRefreshAsync()
+    {
+        const string script = @"(async()=>{try{
+            const h={headers:{accept:'application/json'}};
+            const b=await(await fetch('/api/bootstrap',h)).json();
+            if(b?.error_type==='authentication_error'){window.chrome.webview.postMessage({authError:true});return;}
+            const org0=b?.account?.memberships?.[0]?.organization;
+            let id=org0?.uuid||b?.memberships?.[0]?.organization?.uuid||b?.organizations?.[0]?.uuid||null;
+            const email=b?.account?.email_address||b?.account?.email||null;
+            const caps=org0?.capabilities||[];
+            const capStr=caps.find(c=>typeof c==='string'&&c.startsWith('claude_'))||null;
+            const planLabel=capStr?(capStr.slice(7,8).toUpperCase()+capStr.slice(8).toLowerCase()):null;
+            if(!id){
+                try{const ol=await(await fetch('/api/organizations',h)).json();
+                    if(Array.isArray(ol)&&ol.length>0)id=ol[0]?.uuid||null;}catch(e2){}
+            }
+            if(!id){window.chrome.webview.postMessage({noOrg:true,email});return;}
+            const [u,ov,pp]=await Promise.all([
+                fetch('/api/organizations/'+id+'/usage',h).then(r=>r.json()),
+                fetch('/api/organizations/'+id+'/overage_spend_limit',h).then(r=>r.ok?r.json():null).catch(()=>null),
+                fetch('/api/organizations/'+id+'/prepaid/credits',h).then(r=>r.ok?r.json():null).catch(()=>null)
+            ]);
+            window.chrome.webview.postMessage({email,orgId:id,planLabel,usage:u,overage:ov,prepaid:pp});
+        }catch(ex){window.chrome.webview.postMessage({error:String(ex)});}})()";
+
+        var json = await Application.Current.Dispatcher.InvokeAsync(
+            () => App.BackgroundBrowser.RunScriptAsync(script)).Task.Unwrap();
+
+        if (string.IsNullOrEmpty(json) || json == "null")
+            throw new Exception("Browser refresh returned no data.");
+
+        using var doc = JsonDocument.Parse(json);
+        var root = doc.RootElement;
+
+        if (root.TryGetProperty("authError", out _))
+            throw new Exception("Session expired — please re-authenticate.");
+        if (root.TryGetProperty("error", out var errEl))
+            throw new Exception("Browser script error: " + errEl.GetString());
+        if (root.TryGetProperty("noOrg", out _))
+            throw new Exception("Could not determine organization ID.");
+
+        string? email     = root.TryGetProperty("email",     out var em) && em.ValueKind == JsonValueKind.String ? em.GetString() : null;
+        string? orgId     = root.TryGetProperty("orgId",     out var oi) && oi.ValueKind == JsonValueKind.String ? oi.GetString() : null;
+        string? planLabel = root.TryGetProperty("planLabel", out var pl) && pl.ValueKind == JsonValueKind.String ? pl.GetString() : null;
+
+        UsageResponse?     usage       = null;
+        OverageSpendLimit? overage     = null;
+        PrepaidCredits?    prepaid     = null;
+
+        if (root.TryGetProperty("usage",   out var us) && us.ValueKind == JsonValueKind.Object)
+            usage   = JsonSerializer.Deserialize<UsageResponse>(us.GetRawText(), JsonOpts);
+        if (root.TryGetProperty("overage", out var ov) && ov.ValueKind == JsonValueKind.Object)
+            overage = JsonSerializer.Deserialize<OverageSpendLimit>(ov.GetRawText(), JsonOpts);
+        if (root.TryGetProperty("prepaid", out var pp) && pp.ValueKind == JsonValueKind.Object)
+            prepaid = JsonSerializer.Deserialize<PrepaidCredits>(pp.GetRawText(), JsonOpts);
+
+        return (BuildLimits(usage), overage, prepaid, usage?.ExtraUsage, email, orgId, planLabel);
+    }
+
+    // ── HttpClient refresh (fallback — before browser is ready) ──────────────
+
+    private async Task<(List<AgentLimit>, OverageSpendLimit?, PrepaidCredits?, ExtraUsage?, string?, string?, string?, bool)>
+        TryHttpRefreshAsync(List<(string Name, string Value, string Domain, string Path)> cookies)
+    {
+        using var http = BuildClient(cookies);
+        var bootstrapResp = await http.GetAsync("https://claude.ai/api/bootstrap");
+        if ((int)bootstrapResp.StatusCode is 401 or 403)
+            throw new Exception("Session expired — please re-authenticate.");
+        if (!bootstrapResp.IsSuccessStatusCode)
+            throw new Exception($"Bootstrap failed ({(int)bootstrapResp.StatusCode}).");
+
+        var bootstrapJson = await bootstrapResp.Content.ReadAsStringAsync();
+        var (email, orgId, planLabel) = ParseBootstrap(bootstrapJson);
+
+        if (string.IsNullOrEmpty(orgId))
+            orgId = await FetchOrgIdFromListAsync(http);
+
+        if (string.IsNullOrEmpty(orgId))
+            return ([], null, null, null, email, orgId, planLabel, true);
+
+        var ut = http.GetAsync($"https://claude.ai/api/organizations/{orgId}/usage");
+        var ot = FetchAsync<OverageSpendLimit>(http, $"https://claude.ai/api/organizations/{orgId}/overage_spend_limit");
+        var pt = FetchAsync<PrepaidCredits>(http, $"https://claude.ai/api/organizations/{orgId}/prepaid/credits");
+        await Task.WhenAll(ut, ot, pt);
+
+        var usageResp = ut.Result;
+        if (!usageResp.IsSuccessStatusCode)
+            throw new Exception($"Usage fetch failed ({(int)usageResp.StatusCode}).");
+
+        var usageJson = await usageResp.Content.ReadAsStringAsync();
+        var usage     = JsonSerializer.Deserialize<UsageResponse>(usageJson, JsonOpts);
+
+        return (BuildLimits(usage), ot.Result, pt.Result, usage?.ExtraUsage, email, orgId, planLabel, true);
+    }
+
+    // ── Startup cache ─────────────────────────────────────────────────────────
+    // Called before the browser is ready. Sets sign-in state and shows placeholders
+    // with any previously accumulated burn history so the popup isn't blank.
+
+    public async Task LoadFromCacheAsync()
+    {
+        if (string.IsNullOrEmpty(AppSettings.Default.CookieStore)) return;
+
+        var placeholders = LoadPlaceholderLimits();
+        foreach (var limit in placeholders)
+        {
+            var key = limit.Window.ToString();
+            if (_burnHistory.TryGetValue(key, out var hist) && hist.Count > 0)
+                limit.BurnHistory = [.. hist];
+        }
+
+        await Application.Current.Dispatcher.InvokeAsync(() =>
+        {
+            Limits     = placeholders;
+            IsSignedIn = true;
+        });
+    }
+
     public async Task SignOutAsync()
     {
         AppSettings.Default.CookieStore = "";
@@ -144,12 +299,12 @@ public class UsageViewModel : INotifyPropertyChanged
         {
             IsSignedIn   = false;
             UserEmail    = "";
+            PlanLabel    = "Claude";
             ErrorMessage = "Signed out.";
             Limits       = [];
         });
     }
 
-    // Cookie store: we persist cookies as JSON in settings after login
     public static async Task<List<(string Name, string Value, string Domain, string Path)>> GetCookiesAsync()
     {
         var raw = AppSettings.Default.CookieStore;
@@ -166,7 +321,7 @@ public class UsageViewModel : INotifyPropertyChanged
     public static void SaveCookies(IEnumerable<CoreWebView2Cookie> cookies)
     {
         var entries = cookies
-            .Where(c => c.Domain.Contains("claude.ai"))
+            .Where(c => c.Domain.Contains("claude.ai") || c.Domain.Contains("anthropic.com"))
             .Select(c => new CookieEntry { Name = c.Name, Value = c.Value, Domain = c.Domain, Path = c.Path })
             .ToList();
         AppSettings.Default.CookieStore = JsonSerializer.Serialize(entries);
@@ -178,6 +333,17 @@ public class UsageViewModel : INotifyPropertyChanged
         var handler = new HttpClientHandler { UseCookies = false };
         var http    = new HttpClient(handler);
         http.DefaultRequestHeaders.Add("accept", "application/json");
+        http.DefaultRequestHeaders.Add("User-Agent",
+            "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 " +
+            "(KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36");
+        http.DefaultRequestHeaders.Add("Origin",              "https://claude.ai");
+        http.DefaultRequestHeaders.Add("Referer",             "https://claude.ai/");
+        http.DefaultRequestHeaders.Add("sec-fetch-dest",      "empty");
+        http.DefaultRequestHeaders.Add("sec-fetch-mode",      "cors");
+        http.DefaultRequestHeaders.Add("sec-fetch-site",      "same-origin");
+        http.DefaultRequestHeaders.Add("sec-ch-ua",           "\"Chromium\";v=\"124\", \"Google Chrome\";v=\"124\"");
+        http.DefaultRequestHeaders.Add("sec-ch-ua-mobile",    "?0");
+        http.DefaultRequestHeaders.Add("sec-ch-ua-platform",  "\"Windows\"");
         var cookieHeader = string.Join("; ", cookies.Select(c => $"{c.Name}={c.Value}"));
         http.DefaultRequestHeaders.Add("Cookie", cookieHeader);
         return http;
@@ -195,20 +361,90 @@ public class UsageViewModel : INotifyPropertyChanged
         catch { return null; }
     }
 
-    private static async Task<string?> FetchEmailAsync(HttpClient http)
+    private static (string? Email, string? OrgId, string? PlanLabel) ParseBootstrap(string json)
     {
         try
         {
-            var resp = await http.GetAsync("https://claude.ai/api/bootstrap");
+            using var doc = JsonDocument.Parse(json);
+            var root = doc.RootElement;
+
+            string? email = null;
+            string? orgId = null;
+
+            if (root.TryGetProperty("account", out var acct) &&
+                acct.TryGetProperty("email_address", out var em))
+                email = em.GetString();
+
+            if (root.TryGetProperty("account", out var acctNode) &&
+                acctNode.TryGetProperty("memberships", out var mems) && mems.GetArrayLength() > 0)
+            {
+                var first = mems[0];
+                if (first.TryGetProperty("organization", out var org) &&
+                    org.TryGetProperty("uuid", out var uuid))
+                    orgId = uuid.GetString();
+            }
+
+            if (string.IsNullOrEmpty(orgId) &&
+                root.TryGetProperty("memberships", out var rootMems) && rootMems.GetArrayLength() > 0)
+            {
+                var first = rootMems[0];
+                if (first.TryGetProperty("organization", out var org) &&
+                    org.TryGetProperty("uuid", out var uuid))
+                    orgId = uuid.GetString();
+            }
+
+            if (string.IsNullOrEmpty(orgId) &&
+                root.TryGetProperty("organizations", out var orgs) && orgs.GetArrayLength() > 0)
+            {
+                if (orgs[0].TryGetProperty("uuid", out var uuid))
+                    orgId = uuid.GetString();
+            }
+
+            string? planLabel = null;
+            if (root.TryGetProperty("account", out var acctPlan) &&
+                acctPlan.TryGetProperty("memberships", out var plMems) && plMems.GetArrayLength() > 0 &&
+                plMems[0].TryGetProperty("organization", out var plOrg) &&
+                plOrg.TryGetProperty("capabilities", out var caps) &&
+                caps.ValueKind == JsonValueKind.Array)
+            {
+                foreach (var cap in caps.EnumerateArray())
+                {
+                    var s = cap.GetString() ?? "";
+                    if (s.StartsWith("claude_", StringComparison.OrdinalIgnoreCase))
+                    {
+                        var name = s.Substring("claude_".Length);
+                        if (name.Length > 0)
+                            planLabel = char.ToUpper(name[0]) + name.Substring(1).ToLower();
+                        break;
+                    }
+                }
+            }
+            return (email, orgId, planLabel);
+        }
+        catch { return (null, null, null); }
+    }
+
+    private static async Task<string?> FetchOrgIdFromListAsync(HttpClient http)
+    {
+        try
+        {
+            var resp = await http.GetAsync("https://claude.ai/api/organizations");
             if (!resp.IsSuccessStatusCode) return null;
             var json = await resp.Content.ReadAsStringAsync();
-            var boot = JsonSerializer.Deserialize<BootstrapResponse>(json, JsonOpts);
-            return boot?.Account?.EmailAddress;
+            using var doc = JsonDocument.Parse(json);
+            var root = doc.RootElement;
+            if (root.ValueKind == JsonValueKind.Array && root.GetArrayLength() > 0)
+            {
+                var first = root[0];
+                if (first.TryGetProperty("uuid", out var uuid))
+                    return uuid.GetString();
+            }
+            return null;
         }
         catch { return null; }
     }
 
-    private List<AgentLimit> BuildLimits(UsageResponse? usage)
+    private static List<AgentLimit> BuildLimits(UsageResponse? usage)
     {
         if (usage == null) return [];
         var now    = DateTime.Now;
@@ -263,16 +499,18 @@ public class UsageViewModel : INotifyPropertyChanged
         return $"{diff.Hours}h {diff.Minutes}m";
     }
 
-    private void LoadPlaceholders()
+    private static List<AgentLimit> LoadPlaceholderLimits()
     {
         var now = DateTime.Now;
-        Limits =
+        return
         [
             new() { Window = WindowKind.FiveHour, UsedPercent = 0, TimeRemaining = "—", ResetDate = now.AddHours(1) },
             new() { Window = WindowKind.SevenDay,  UsedPercent = 0, TimeRemaining = "—", ResetDate = now.AddDays(7) },
         ];
     }
 
+    private void LoadPlaceholders() => Limits = LoadPlaceholderLimits();
+
     private void LoadBurnHistory()
     {
         try

windows/WebViewFetchWindow.cs

@@ -0,0 +1,145 @@
+using Microsoft.Web.WebView2.Core;
+using Microsoft.Web.WebView2.Wpf;
+using System;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace ClaudeCheckerWindows;
+
+// Invisible 1×1 window that hosts a WebView2 for authenticated API calls.
+// Uses the same user data folder as LoginWindow so the session (including
+// cf_clearance) is always shared and fresh — equivalent to macOS's WKWebsiteDataStore.
+//
+// Two usage modes:
+//   • Persistent (App.BackgroundBrowser): created once at startup, navigates to
+//     claude.ai once, then scripts run directly on the live page every refresh.
+//     No re-navigation = no memory accumulation.
+//   • One-shot (LoginWindow): created, used, closed — same as before.
+public sealed class WebViewFetchWindow : Window
+{
+    private readonly WebView2 _wv = new();
+    private bool _initialized;
+    private bool _readyForScript; // true after first navigation to claude.ai completes
+
+    private static readonly string UserDataFolder =
+        Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+            "ClaudeChecker", "WebView2");
+
+    public bool IsReady => _readyForScript;
+
+    public WebViewFetchWindow()
+    {
+        Width              = 1;
+        Height             = 1;
+        Left               = -9999;
+        Top                = -9999;
+        ShowInTaskbar      = false;
+        WindowStyle        = WindowStyle.None;
+        AllowsTransparency = true;
+        Opacity            = 0;
+        Content            = _wv;
+    }
+
+    // ── Persistent-mode init ──────────────────────────────────────────────────
+
+    // Call once at startup. Navigates to claude.ai so the session/cookies are
+    // established and cf_clearance is fresh. Subsequent RunScriptAsync calls
+    // skip navigation and just execute JS on the live page.
+    public async Task InitAsync()
+    {
+        await EnsureInitAsync();
+
+        var navDone = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);
+        EventHandler<CoreWebView2NavigationCompletedEventArgs>? h = null;
+        h = (_, e) => { _wv.CoreWebView2.NavigationCompleted -= h; navDone.TrySetResult(e.IsSuccess); };
+        _wv.CoreWebView2.NavigationCompleted += h;
+        _wv.CoreWebView2.Navigate("https://claude.ai");
+
+        // Wait up to 15 s for initial navigation
+        await Task.WhenAny(navDone.Task, Task.Delay(15000));
+        _readyForScript = navDone.Task.IsCompletedSuccessfully && navDone.Task.Result;
+    }
+
+    // Run a JS script on the already-loaded claude.ai page.
+    // The script must call window.chrome.webview.postMessage(result).
+    public async Task<string?> RunScriptAsync(string script, int timeoutMs = 10000)
+    {
+        if (!_readyForScript) return null;
+
+        var tcs = new TaskCompletionSource<string?>(TaskCreationOptions.RunContinuationsAsynchronously);
+        EventHandler<CoreWebView2WebMessageReceivedEventArgs>? msgHandler = null;
+        msgHandler = (_, args) =>
+        {
+            _wv.CoreWebView2.WebMessageReceived -= msgHandler;
+            tcs.TrySetResult(args.WebMessageAsJson);
+        };
+        _wv.CoreWebView2.WebMessageReceived += msgHandler;
+
+        try { await _wv.CoreWebView2.ExecuteScriptAsync(script); }
+        catch
+        {
+            _wv.CoreWebView2.WebMessageReceived -= msgHandler;
+            return null;
+        }
+
+        _ = Task.Delay(timeoutMs).ContinueWith(_ =>
+        {
+            _wv.CoreWebView2.WebMessageReceived -= msgHandler;
+            tcs.TrySetResult(null);
+        });
+
+        return await tcs.Task;
+    }
+
+    // ── One-shot mode (LoginWindow) ───────────────────────────────────────────
+
+    public async Task<string?> FetchAsync(string navigateUrl, string script, int timeoutMs = 20000)
+    {
+        await EnsureInitAsync();
+
+        var tcs = new TaskCompletionSource<string?>(TaskCreationOptions.RunContinuationsAsynchronously);
+
+        EventHandler<CoreWebView2WebMessageReceivedEventArgs>? msgHandler = null;
+        msgHandler = (_, args) =>
+        {
+            _wv.CoreWebView2.WebMessageReceived -= msgHandler;
+            tcs.TrySetResult(args.WebMessageAsJson);
+        };
+        _wv.CoreWebView2.WebMessageReceived += msgHandler;
+
+        EventHandler<CoreWebView2NavigationCompletedEventArgs>? navHandler = null;
+        navHandler = async (_, e) =>
+        {
+            _wv.CoreWebView2.NavigationCompleted -= navHandler;
+            if (!e.IsSuccess) { tcs.TrySetResult(null); return; }
+            try   { await _wv.CoreWebView2.ExecuteScriptAsync(script); }
+            catch { tcs.TrySetResult(null); }
+        };
+        _wv.CoreWebView2.NavigationCompleted += navHandler;
+        _wv.CoreWebView2.Navigate(navigateUrl);
+
+        _ = Task.Delay(timeoutMs).ContinueWith(_ =>
+        {
+            _wv.CoreWebView2.WebMessageReceived -= msgHandler;
+            tcs.TrySetResult(null);
+        });
+
+        return await tcs.Task;
+    }
+
+    // ── Shared init ───────────────────────────────────────────────────────────
+
+    private int _initGuard;
+
+    private async Task EnsureInitAsync()
+    {
+        if (_initialized) return;
+        if (Interlocked.Exchange(ref _initGuard, 1) != 0) return;
+
+        var env = await CoreWebView2Environment.CreateAsync(userDataFolder: UserDataFolder);
+        await _wv.EnsureCoreWebView2Async(env);
+        _initialized = true;
+    }
+}